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block/sed-opal: Introduce free_opal_dev to free the structure and clean up state

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Before we free the opal structure we need to clean up any saved
locking ranges that the user had told us to unlock from a suspend.

Signed-off-by: Scott Bauer <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Scott Bauer 2017-02-22 10:15:06 -07:00 • committed by Jens Axboe
commit 7d6d15789d
2 changed files with 35 additions and 0 deletions
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30
block/sed-opal.c
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@ -1987,6 +1987,28 @@ static int check_opal_support(struct opal_dev *dev)
return ret;
}
static void clean_opal_dev(struct opal_dev *dev)
{
struct opal_suspend_data *suspend, *next;
mutex_lock(&dev->dev_lock);
list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) {
list_del(&suspend->node);
kfree(suspend);
}
mutex_unlock(&dev->dev_lock);
}
void free_opal_dev(struct opal_dev *dev)
{
if (!dev)
return;
clean_opal_dev(dev);
kfree(dev);
}
EXPORT_SYMBOL(free_opal_dev);
struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv)
{
struct opal_dev *dev;
@ -2141,6 +2163,14 @@ static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal)
setup_opal_dev(dev, revert_steps);
ret = next(dev);
mutex_unlock(&dev->dev_lock);
/*
* If we successfully reverted lets clean
* any saved locking ranges.
*/
if (!ret)
clean_opal_dev(dev);
return ret;
}